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(Q8773)
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subclass of
pyramidal number
follows
pentagonal pyramidal number
followed by
heptagonal pyramidal number
series ordinal
6
0 references
defining formula
n
(
n
+
1
)
(
4
n
−
1
)
6
{\displaystyle {\frac {n(n+1)(4n-1)}{6}}}
0 references
Sitelinks
⧼wikibase-sitelinks-mywikigroup⧽
(0 entries)
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